Ditto.... NO
Keep in mind that MAME is not supposed to allow you to create a real working arcade game with your pc. It's purpose is supposed to be to preserve the software and emulate the hardware of arcade games for future generations. The fact that anything is playable is a happy side effect. :-)
Mame's mission statment explains all of this. I believe the reason a universal credit system has not been created, besides the obvious individual driver issues, is for this reason.
Remember, it's your machine silly, you cna always open the door in the bottom and get your money back out.